JUST ADDED: 5 Seconds of Summer will be rocking the stage at this year's iHeartRadio Music Festival Village in Las Vegas! The band sat down with Ryan Seacrest to break the news. Click here to buy your tickets now, before they sell out!
While across the pond at BBC Radio 1, the sisters of Haim performed their single "If I Could Change Your Mind," but they also covered one of the biggest pop artists around - Queen Bey herself!
The sisters sang Beyonce's "XO" - and beautifully too! Maybe they will sing it together one day.
Check it out below: